On Friday, October 17, 2014 04:07:50 PM Viresh Kumar wrote:
> On 17 October 2014 15:53, Kelvin Cheung <keguang.zhang@xxxxxxxxx> wrote:
> > This patch adds cpufreq driver for Loongson1B which
> > is capable of changing the CPU frequency dynamically.
> >
> > Signed-off-by: Kelvin Cheung <keguang.zhang@xxxxxxxxx>
> >
> > ---
> > V3:
> > Remove superfluous devm_clk_put().
>
> Sorry for being bad to you :)
>
> > +static int ls1x_cpufreq_probe(struct platform_device *pdev)
> > +{
> > + struct plat_ls1x_cpufreq *pdata = pdev->dev.platform_data;
> > + struct clk *clk;
> > + int ret;
> > +
> > + if (!pdata || !pdata->clk_name || !pdata->osc_clk_name)
> > + return -EINVAL;
> > +
> > + ls1x_cpufreq.dev = &pdev->dev;
> > +
> > + clk = devm_clk_get(&pdev->dev, pdata->clk_name);
> > + if (IS_ERR(clk)) {
> > + dev_err(ls1x_cpufreq.dev, "unable to get %s clock\n",
> > + pdata->clk_name);
> > + ret = PTR_ERR(clk);
> > + goto out;
> > + }
> > + ls1x_cpufreq.clk = clk;
> > +
> > + clk = clk_get_parent(clk);
> > + if (IS_ERR(clk)) {
> > + dev_err(ls1x_cpufreq.dev, "unable to get parent of %s clock\n",
> > + __clk_get_name(ls1x_cpufreq.clk));
> > + ret = PTR_ERR(clk);
> > + goto out;
> > + }
> > + ls1x_cpufreq.mux_clk = clk;
> > +
> > + clk = clk_get_parent(clk);
> > + if (IS_ERR(clk)) {
> > + dev_err(ls1x_cpufreq.dev, "unable to get parent of %s clock\n",
> > + __clk_get_name(ls1x_cpufreq.mux_clk));
> > + ret = PTR_ERR(clk);
> > + goto out;
> > + }
> > + ls1x_cpufreq.pll_clk = clk;
> > +
> > + clk = devm_clk_get(&pdev->dev, pdata->osc_clk_name);
> > + if (IS_ERR(clk)) {
> > + dev_err(ls1x_cpufreq.dev, "unable to get %s clock\n",
> > + pdata->osc_clk_name);
> > + ret = PTR_ERR(clk);
> > + goto out;
> > + }
> > + ls1x_cpufreq.osc_clk = clk;
> > +
> > + ls1x_cpufreq.max_freq = pdata->max_freq;
> > + ls1x_cpufreq.min_freq = pdata->min_freq;
> > +
> > + ret = cpufreq_register_driver(&ls1x_cpufreq_driver);
> > + if (ret) {
> > + dev_err(ls1x_cpufreq.dev,
> > + "failed to register cpufreq driver: %d\n", ret);
> > + goto out;
> > + }
> > +
> > + ret = cpufreq_register_notifier(&ls1x_cpufreq_notifier_block,
> > + CPUFREQ_TRANSITION_NOTIFIER);
> > +
> > + if (!ret)
> > + goto out;
> > +
> > + dev_err(ls1x_cpufreq.dev, "failed to register cpufreq notifier: %d\n",
> > + ret);
> > +
> > + cpufreq_unregister_driver(&ls1x_cpufreq_driver);
> > +out:
>
> But all these goto out; doesn't make sense anymore. Just issue returns
> from all places and add
>
> Acked-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
Patch queued up for 3.19-rc1, thanks!
--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
